Field shaper for a wireless power transmitter
US11177680B2 · kind B2 · utility
1Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2017 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Feb 20, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Techniques for focusing the energy radiated by a wireless power transmitting unit are described. An example power transmitting unit includes a transmit coil configured to generate a magnetic field to wirelessly power a device within an active wireless charging area. The power transmitting unit also includes a power generating circuitry to deliver current to the transmit coil to generate the magnetic field. The power transmitting unit also includes a ferrite structure disposed below the transmit coil, the ferrite structure comprising a flat sheet and a projection of ferrite material projecting above the flat sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.